Preparation of Tri- and Difluoromethylsilanes via an Unusual Magnesium Metal-Mediated Reductive Tri- and Difluoromethylation of Chlorosilanes Using Tri- and Difluoromethyl Sulfides, Sulfoxides, and Sulfones
作者:G. K. Surya Prakash、Jinbo Hu、George A. Olah
DOI:10.1021/jo030110z
日期:2003.5.1
A new and efficient method for the preparation of tri- and difluoromethylsilanes using magnesium metal-mediated reductive tri- and difluoromethylation of chlorosilanes is reported using tri- and difluoromethyl sulfides, sulfoxides, and sulfones. The byproduct of the process is diphenyl disulfide. Since phenyl trifluoromethyl sulfone, sulfoxide, and sulfide are readily prepared from trifluoromethane
Csp<sup>3</sup>–H Trifluoromethylation of Unactivated Aliphatic Systems
作者:Jiachen He、Truong N. Nguyen、Shuo Guo、Silas P. Cook
DOI:10.1021/acs.orglett.0c03891
日期:2021.2.5
method for the undirected trifluoromethylation of unactivated methylene units was developed. The reaction proceeds in aqueous acetonitrile with Grushin’s reagent, bpyCu(CF3)3, under broad-spectrum white-light irradiation. The trifluoromethylation tolerates a wide range of functional groups including ketones, esters, nitriles, amides, alcohols, and carboxylic acids. The C–H cleavage step is performed
开发了一种用于未活化亚甲基单元的非定向三氟甲基化的简单方法。该反应在乙腈水溶液中与 Grushin 试剂 bpyCu(CF 3 ) 3在广谱白光照射下进行。三氟甲基化可耐受多种官能团,包括酮、酯、腈、酰胺、醇和羧酸。C-H 裂解步骤是通过分子间 H 原子抽象进行的,并且报告了在一系列亚甲基单元上的选择性。机理研究为整体转化提供了一般反应坐标。
Magnesium mediated preparation of fluorinated alkyl silanes
申请人:——
公开号:US20030153778A1
公开(公告)日:2003-08-14
An efficient method is disclosed for the preparation of trifluoromethyl- and difluoromethylsilanes using magnesium metal mediated reductive tri- and difluoromethylation of chlorosilanes with tri- and difluoromethyl sulfides, sulfoxides, and sulfones. One byproduct of the process is diphenyl disulfide. Since phenyl trifluoromethyl sulfone, sulfoxide and sulfide are readily prepared from readily available trifluoromethane and diphenyl disulfide, the method can be considered “pseudo-catalytic” for the preparation of (trifluoromethyl)trimethylsilane from environmentally benign trifluoromethane.